- Video Example: P(SATM<540)

Question: SAT-Math scores are normally distributed with a mean of 500 and standard deviation of 100. What proportion of scores are less than 540?

  1. On a PC: from the menu select STATISTICS > Distribution Plot
    On a Mac: from the menu select Statistics > Probability Distributions > Distribution Plot
  2. Select Display Probability 
  3. For Distribution select Normal (Note: This is the default)
  4. For Mean enter 500
  5. For Standard deviation enter 100
  6. Select A specified X value
  7. Select Left tail
  8. For X value enter 540

Video Walkthrough